<!DOCTYPE html>
<html ng-app>
<head>
 	<title>Hello</title>
 	<script
		src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.0-rc.2/angular.js">
	</script>
</head>
<body>
	<input ng-model="name" type="text" placeholder="请输入名称">
	<h1>Hello {{ name }}</h1>
</body>
</html> 